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Finding the Fourth Proportional to 3,603.28, 4,974.64 and 2,860.24

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Solution

The fourth proportional to 3,603.28, 4,974.64 and 2,860.24 is: 3,948.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,603.28 : 4,974.64 = 2,860.24 : x
  2. Step 2: Convert to fraction form
    3,603.28/4,974.64 = 2,860.24/x
  3. Step 3: Cross multiply
    3,603.28x = 4,974.64 × 2,860.24
  4. Step 4: Simplify right side
    3,603.28x = 14,228,664.31
  5. Step 5: Solve for x
    x = 14,228,664.31/3,603.28
  6. Step 6: Final answer
    x = 3,948.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.